Textile machine, in particular spinning mill preparation machine with a drafting equipment

Abstract

A textile machine, especially a spinning preparation machine, included a drafting device having several drive disks for driving machine elements, especially drafting device rollers. At least one endless belt surrounds at least two of the drive disks. The belt comprises at least two longitudinal ribs on one side that are received in corresponding longitudinal grooves on the circumference side and running in the circumferential direction of at least one drive disk in contact with the endless belt.

1 - 19 . (Cancelled)  
   
   
       20 . A textile machine having a draft device, said textile machine comprising: 
 a plurality of drive disks for driving machine elements within said drafting device;    at least one endless belt disposed around at least two of said drive disks, said at least one endless belt includes at least two longitudinal ribs on a first side; and    at least one of said at least two drive disks defining corresponding grooves around a circumferential side and running in a circumferential direction of said drive disk, said corresponding grooves receiving said at least two longitudinal ribs of said at least one endless belt.    
   
   
       21 . A textile machine as in  claim 20 , wherein said longitudinal ribs comprise a wedge shape.  
   
   
       22 . A textile machine as in  claim 20 , wherein said endless belt comprises a flat second side facing away from said first side of said endless belt.  
   
   
       23 . A textile machine as in  claim 20 , wherein said endless belt comprises a second side having a profile facing away from said first side of said endless belt.  
   
   
       24 . A textile machine as in  claim 23 , wherein said profile comprises at least two longitudinal ribs.  
   
   
       25 . A textile machine as in  claim 20 , wherein said profile comprises a toothed-type profile.  
   
   
       26 . A textile machine as in  claim 20 , wherein said plurality of drive disks comprise driving disks and driven disks, whereby said endless belt is disposed around a driving disk and a plurality of driven disks.  
   
   
       27 . A textile machine as in  claim 20 , further comprising a tensioning device including a movably supported tensioning roller around which the endless belt is looped.  
   
   
       28 . A textile machine as in  claim 27 , wherein said endless belt loops around said tensioning roller at a looping angle.  
   
   
       29 . A textile machine as in  claim 28 , wherein said looping angle ranges between about 160° and about 200°.  
   
   
       30 . A textile machine as in  claim 28 , wherein said looping angle is about 180°.  
   
   
       31 . A textile machine as in  claim 27 , wherein said tensioning device includes a spring configured to place a load on said tensioning roller so that said tensioning roller is movable.  
   
   
       32 . A textile machine as in  claim 31 , wherein said tensioning devices includes a linearly guided carriage configured to support said tensioning roller, said carriage being loaded by said spring.  
   
   
       33 . A textile machine as in  claim 32 , wherein said spring comprises a gas spring.  
   
   
       34 . A textile machine as in  claim 33 , wherein said gas spring comprises a dampening device that at least one of dampens or avoids oscillations of said endless belt during operation of the textile machine.  
   
   
       35 . A textile machine as in  claim 27 , wherein said tensioning device comprises a fixing device disposed thereto, said fixing device fastening said tensioning roller in a fixed position.  
   
   
       36 . A textile machine as in  claim 20 , wherein said tensioning device continuously tensions said endless belt during operation of the machine.